Fix resize issues when using threaded compositing

content/browser/renderer_host/render_widget_host.cc

Index: content/browser/renderer_host/render_widget_host.cc
diff --git a/content/browser/renderer_host/render_widget_host.cc b/content/browser/renderer_host/render_widget_host.cc
index 996b70cc87c576bb522f065b98aeddd857d896c0..615e0b800245b9452386d569c9936af1195667a7 100644
--- a/content/browser/renderer_host/render_widget_host.cc
+++ b/content/browser/renderer_host/render_widget_host.cc
@@ -986,11 +986,11 @@ void RenderWidgetHost::OnMsgUpdateRect(
     UMA_HISTOGRAM_TIMES("MPArch.RWH_RepaintDelta", delta);
   }
 
-  DCHECK(!params.bitmap_rect.IsEmpty());
   DCHECK(!params.view_size.IsEmpty());
 
   bool was_async = false;
   if (!is_accelerated_compositing_active_) {
+    DCHECK(!params.bitmap_rect.IsEmpty());
     const size_t size = params.bitmap_rect.height() *
         params.bitmap_rect.width() * 4;
     TransportDIB* dib = process_->GetTransportDIB(params.bitmap);